Data/hora: 03/06/2024 13:12:04

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 23/05/2023
Data da última atualização: | 27/09/2023
Autoria: | AJULO, A. A.; ASOBIA, W. C.; OLIVEIRA, R. S. de; BEZERRA, G. de A.; GONÇALVES, A. R.; FILIPPI, M. C. C. de.
Afiliação: | AKINTUNDE ABIODUN AJULO, UNIVERSIDADE FEDERAL DE GOIÁS; WILL CHUKWUMA ASOBIA, UNIVERSIDADE FEDERAL DE GOIÁS; RODRIGO SILVA DE OLIVEIRA, UNIVERSIDADE FEDERAL DE GOIÁS; GUSTAVO DE ANDRADE BEZERRA, Hubio Biopar Agro, Uberlândia-MG; ARIANY ROSA GONÇALVES, bolsista CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF.
Título: | Screening bacterial isolates for biocontrol of sheath blight in rice plants.
Ano de publicação: | 2023
Fonte/Imprenta: | Journal of Environmental Science and Health, Part B, v. 58, n. 5, p. 426-435, 2023.
DOI: | https://doi.org/10.1080/03601234.2023.2220644
Idioma: | Inglês
Conteúdo: | Sheath blight (Rhizoctonia solani) causes significant yield losses in rice (Oryza sativa L.). Its sustainable management needs an efficient biocontrol agent. The objective was to screen bacterial isolates as an antagonist to R. solani and identify the most efficient ones as sheath blight suppressors under greenhouse conditions. Two assays (E1 and E2) were performed in a completely randomized design with three replications. E1 tested 21 bacterial isolates antagonists to R. solani in vitro. E2 was conducted under greenhouse conditions, with rice cultivar BRS Pampeira sown in plastic pots (7 kg) containing fertilized soil. Sixty old plants were inoculated with a segment of a toothpick containing fragments of R. solani, followed by spray inoculation of a bacterial suspension (108 CFU/mL). The severity of the disease was determined by calculating the relative lesion size formed on the colm. Isolates BRM32112 (Pseudomonas nitroreducens), BRM65929 (Priestia megaterium), and BRM65919 (Bacillus cereus) reduced R. solani colony radial growth by 92.8, 77.56, and 75.56%, respectively while BRM63523 (Serratia marcescens), BRM65923 and BRM65916 (P. megaterium) and BRM65919 (B. cereus) with 23.45, 23.37, 23.62, and 20.17 cm, respectively were effective at suppressing sheat.
Palavras-Chave: | Bioagents; Biocontrol.
Thesagro: | Arroz; Inoculação; Oryza Sativa; Rhizoctonia Solani.
Thesaurus Nal: | Crop losses; Inoculation methods; Rice.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (36755-1) - UPC - AP - DD - 2023 -  - 2023 - DIS